PL175586B1 - Synergistic herbicide and method of weed killing - Google Patents

Abstract

Synergistic herbicide agent, containing an active substance, typical supporting agents and a carrier allowed for agricultural use, characterised in that it contains herbicidally effective joint amount of dimetenamid and another herbicide chosen from the group of sulphonylurea herbicides, including rimsulfuron, metsulfuron, methylo-metsulfuron, nicosulfuron, triasulfuron, primisulfuron, bensulfuron, chlorimuron, ethylochlorimuron, chlorsulfuron, sulfometuron,, tifensulfuron, tribenuron, etametsulfuron, klopyrasulfuron, pyrazasulfuron, prosulfuron and halosulfuron and a herbice from urea group, including diuron, fluometruon, linuron, tebutiuron, tidiazuron, forchlorfenuron, whereby the ratio of the urea herbicide to dimetanamid is 2:1 to 1:4 and the weight ratio of dimetenamid to sulphonylurea herbicide is 0.6:1 to 3000:1 and active substances are present at the amount of 0.01-90 weight percent. 4. Method for fighting undesirable vegetation, characterised in that synergistic herbicide is applied where undesirable vegetation grows, characterised in that it contains herbicidally effective joint amount of dimetenamid, herbicide chosen from from the group of sulphonylurea herbicides, including rimsulfuron, metsulfuron, methylo-metsulfuron, nicosulfuron, triasulfuron, primisulfuron, bensulfuron, chlorimuron, ethylochlorimuron, chlorsulfuron, sulfometuron,, tifesulfuron, tribenuron, etamesulfuron, klopyrasulfuron, pyrazasulfuron, prosulfuron and halosulfuron and a herbiced from.. group, including diuron, fluometruon, linuron, tebutiuron, tidiazuron, forchlorfenuron, whereby the ratio of the urea herbicide to dimetanamid is 2:1 to 1:4 and the weight ratio of dimetenamid to sulphonylurea herbicide is 0.6:1 to 3000:1 and active substances are present at the amount of 0.01-90 weight percent, whereby dimetenamid present in the agent is used in the amount of 0.1-3 kg/hectare and sulphonylurea herbicide present in the agent is used in the amount of 1-150g/hectare and urea present in the agent is used in the amount of 0.5-600g/hectare.

Description

The present invention relates to a synergistic herbicide and a method for controlling undesirable vegetation.

Dimethhenamide (FRONTIER®) with a chemical name of 2-chloro-N- (2,4-dimethyl-3-thienyl) -N- (2-methoxy-1-methylethyl) acetamide, its preparation, herbicidal compositions containing it and their use as herbicides are described in US Patent No. 4,666,502, incorporated herein by reference. Dimethhenamide consists of 4 stereoisomers due to two chiral elements and can also exist as individual isomers as well as diastereomeric mixtures (1S, aRS (known as S-dimethhenamide) and 1R, aRS (known as R-dimethhenamide) and as a mixture Racemic (1RS, aRS) References herein to dimethhenamide refer to its various forms, unless otherwise stated, Among the diastereomeric mixtures, mixtures of S-dimethhenamide are preferred.

The term herbicides as used herein refers to compounds which control or regulate undesirable growth in vegetation. This class of compounds can be subclassed according to the main type and mode of action that the herbicide has on plants. For example, according to GF Warren of Purdue University, Indiana, United States, herbicides can be classified as auxin transfer inhibitors, herbicides, growth regulators, photosynthesis inhibitors, pigment inhibitors, growth inhibitors, amino acid synthesis inhibitors, lipid biosynthesis inhibitors, cell wall biosynthesis inhibitors, aggressive agents membrane disruptors as well as mixed herbicides which do not fall under any of the above categories.

It has now surprisingly been found that the joint application of dimethhenamide and at least one other herbicide results in better, and in some cases longer lasting, control of undesirable plant development. By itself, the synergistic effect shows a high degree of control at the co-administered doses which are significantly lower than the doses of each individual compound needed to obtain the same degree of control. Furthermore, for any given co-applied dose, the degree of control is greater than the added effect obtained with the individual components at the same doses. In some instances, both the speed of action and the level of damage are increased, and / or weeds that are not damaged by any of the components at economically reasonable doses may be destroyed.

This synergistic effect allows for satisfactory control at reduced doses of each component and even in amounts which, if used for the individual component alone, would give unsatisfactory destruction. In addition, a longer residual control can be achieved. This provides significant economic and environmental benefits when using dimethhenamide and the herbicide (s) used in conjunction with it.

Co-application is achieved by mixing the individual active ingredients formulations in a tank or by consecutive (preferably 1-2 days) application of such formulations or by applying a pre-mix made from a predetermined combination of the individual active ingredients.

Examples of herbicides that can be used in combination with dimethhenamide are:

1. auxin transfer inhibitors, e.g. naptalam

2. growth regulators including 1) benzoic acids, e.g. dicamba; b) phenoxy acids of i) the acetic acid type e.g. 2,4-D, MCPA, ii) the propionic acid type e.g.

2,4-DP, MCPP, iii) butyric acid type, e.g. 2,4-DB, MCPB; c) picolinic acids and related compounds, e.g. picloram, triclopyr, fluoroxypyr, clopyralid,

3. photosynthesis inhibitors including a) s-triazines i) chloro substituted, e.g. atrazine, simazine, cyanazine, ii) methoxy substituted, e.g. prometone, iii) methylthio substituted e.g. amethrin, promethrin; b) other triazines, e.g. hexazinone, metribuzin; c) substituted ureas, e.g. diuron, fluometruon, linuron, tebuthiuron, thidiazuron, forchlorfenuron;

d) uracils, e.g. bromacil, terbacil; e) others, e.g. bentazone, desmidefam, phenmedipham, propanil, pyrazone, pyridate,

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4. pigment inhibitors including a) pyridazinones, e.g., norflurazone; b) isoxazolones, e.g. clomazone; c) others, e.g. amitrole, fluridone,

5. growth inhibitors including a) mitotic disruptors i) dinitroanilines, e.g. trifluralin, prodiamine, benefin, etalfluralin, isopropalin, oryzalin, pendimethalin; ii) others e.g. DCPA, dithiopyr, thiazopyr, pronamide; b) inhibitors of sprouting from germinating seedlings i) thiocarbamates, e.g. EPTC, butylate, cyclohe, molinate, pebulate, thiobencarb, triallate, vemolat; c) seedling root inhibitors only, e.g. bensulite, napropamide, siduron; d) seedling root and shoot inhibitors, including chloroacetamides, e.g. alachlor, acetochlor, metolachlor, diethatyl, propachlor, butachlor, pretilachlor, metazachlor, dimethachlor and others, e.g. cinnmethylin,

6. amino acid synthesis inhibitors including a) glyphosate, glufosate; b) sulfonylureas, e.g. rimsulfuron, metsulfuron, nicosulfuron, triasulfuron, primisulfuron, bensulfuron, chlorimuron, chlorsulfuron, sulfometuron, thifensulfuron, tribenuarone, etametsulfuron, trisulfuron, clopyrasulfuron, chlorosulfuron, pyrazurulfuron, chloropyrasulfuron, 152005 sulfuron; c) sulfonamides, e.g. flumetsulam (a.k.a. DE498); d) imidazolones, e.g. imazaquin, imazametabenz, imazapyr, imazethapyr,

7. lipid biosynthesis inhibitors including a) cyclohexanediones, e.g., sethoxydim, clethodim; b) aryloxyphenoxy compounds, e.g. butyl-P-fluazifop, clethodim, methyldiclofop, methyl-haloxyfop, quisalophop; c) others, e.g. ethyl-fenoxaprop,

8.inhibitors of cell wall biosynthesis, e.g. dichlobenil, isoxaben,

9. Wall-abrasive disruption agents including a) bipyridliums, e.g. paraquat, diquat; b) diphenyl ethers, e.g., acifluorfen, fomesafen, lactophen, oxyfluorfen;

c) glutamine synthase inhibitors for example glufosinate; d) others, e.g. oxadiazone,

10. Mixed, including a) carbamates, e.g. azulam; b) nitriles, e.g. bromoxynil, ioxynil; c) hydanthocidin and derivatives; d) various, e.g. paclobutrazole, etofumazate, quinclorac (a.k.a. BAS514), difenzoquat, endotal, fosamine, DSMA, MSMA,

11. Others

a) triketones and dions of the type described in US Patent Nos. 4,695,673; 4,869,748; 4,921,526; 5,006,150; 5,089,046, in U.S. Patent Applications 07 / 411,086 (and EP-A-338,992); and 07 / 994.048 (and EP-A-394.889 and EP-A-506.907) as well as EP-A-137,963; EP-A-186,118; EP-A-186,119, EP-A-186,120; EP-A-249,150; EP-A-336,898; which are provided as reference. Examples of such triketones and diones are sulcotrione (MIKADO®), which has the chemical name 2- (2-chloro-4-methanesulfonylbenzoyl) -1,3-cyclohexanedione; 2- (4-methylsulfonyloxy-2-mirobenzoyl) 4,4,6,6-tetramethyl-1,3-cyclohexanedione; 3- (4-methylsulfonyloxy-2-nitrobenzoyl) -bicyclo [3.2.1] octane-2,4 -dione; 3t (4-methylsulfonyl-2-nitrobenzoyl) -bicyclo [3.2.'1] octane

2,4-dione; 4- (4-chloro-2-nitrobenzoyl) t2,6,6-trimethyl-2H-1,2-oxazine-3,5 (4H, 6H) dione; 4t (4-t-methyl-2-nitrobenzoyl) -2,6,6-trimethyl-2H-1,2-oxazine-3,5- (4H, 6H) -dione; 3- (4-methylthiot-2-nitrobenzoyl) -bicyclo [3.2.1] octane-2,4-dione; 4- (2-nitrot-4-trifluoromethoxybenzoyl) -2,6,6-trimethyl-H-1,2-oxazino-3,5 (4H, 6H) -dione,

b) compounds of the type described in US Patent Application Nos. 08 / 036,006 (and EP-A-461,079 and EP-A ^ -549,524); EP-A-315,889; and PCT Application No. 91/10653, which are herein incorporated by reference including, for example, 3 - [(4,6-dimethoxy-2-pyrithidinyl) hydroxymethyl] -N-methyl-2-pyridinecarboxamide; 4,7-dichloro-3- (4,6-dimethoxyt-2-pyrimidinyl) -3-hexanoyloxyphthalide; 3 - [(4,6-dimethoxyt-2-pyrimidinyl) carbonyl] tN, N-dimethylth2-pyridinecarboxamide; 3,6-dichlorot-2 - [(4,6-dimethoxy-2-pyrimidinyl) carbonyl] benzoic acid; 6-Tchloro-2 - [(4,6-dimethoxyt-2-pyrimidinyl) thio] benzoic acid (a.k.a. DPX-PE350 or pyriobak) and its salts.

The invention thus relates to a method of combating or regulating undesirable vegetation growth or otherwise regulating vegetation growth, which comprises co-application to a site where such eradication or control is desired, a herbicidally effective or growth regulating amount of combined dimethhenamide with at least one other herbicide.

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The method of controlling undesirable vegetation according to the invention consists in applying a synergistic herbicide to the places of undesirable vegetation, characterized in that it comprises a herbicidally effective combined amount of dimethyleneamide, a herbicide selected from the group of sulfonylurea herbicides, including rimsulfuron, metsulfuron, methylol metsulfuron, nicosulfuron, triasulfuron, primisulfuron, bensulfuron, chlorimuron, ethylchlorimuron, chlorsulfuron, sulfometuron, thifensulfuron, tribenuron, etametsulfuron, kopyrasulfuron, pyrazasulfuron, prosulfuron, thsulfuron, fluoro-sulfuron, and foricydiazorphuron, for the group of uriosulfuron, and foricydomethorphuron, and for the group wherein the ratio of urea herbicide to dimethanamide is 2: 1 to 1: 4, the weight ratio of dimethhenamide to sulfonylurea herbicide is 0.6: 1 to 3000: 1 and the active substances are present in an amount of 0.01-90% by weight, with that the dimethenamid present in the center of st 0.1-3 kg / ha is applied, the sulfonylurea inside is applied at 1-150 g / ha, and the urea inside is applied at 0.5-600 g / ha.

Preferably, an agent is applied characterized in that it comprises dimethhenamide, chlorimuron and diuron as active ingredients.

Preferably, the agent is applied, characterized in that the active ingredients are dimethhenamide, chlorimuron and urea, but the dimethhenamide inside is used in an amount of 0.9-3 kg / ha and the chlorimuron inside is used in an amount of 10 - 100 g / ha and the urea present inside is applied in an amount of 0.5 - 600 g / ha.

Preferably, an agent is applied characterized in that it comprises dimethhenamide, nicosulfuron and urea as active ingredients.

Preferably, the agent is applied, characterized in that the dimethhenamide present in the agent is applied in an amount of 0.1-2.0 kg / ha, in particular 0.25 to 1.5 kg / ha.

Preferably, the agent is applied characterized in that the sulfonylurea contained in the agent is applied in an amount of 10 to 100 g / ha.

Co-administered doses will of course depend on the climatic conditions, season, soil ecology, weeds to be controlled and the like, however effective results may be obtained, e.g. with dimethhenamide doses of 0.1 to 3.0 kg / ha, preferably 0.1 to 2 , 0 kg / ha, in particular 0.25 to 1.5 kg / ha, e.g. 0.9 to 1.5 kg / ha, when applied in conjunction with the respective partner herbicide application rates and significantly lower than those recommended for them. individual use.

The suitability of a particular pre-emergence or post-emergence joint application and the selectivity will of course depend on the partner used.

The activity of dimethhenamide is described in the above-mentioned patents, and the respective herbicidal partners are described in the literature or in commercial forms (cf. also CROP PROTECTION CHEMICALS REFERENCE, 9th Edition (1993) Chemical & Pharmaceutical Press, NY, NY; The Pesticide Manual. , 9th Edition (1991), British Crop Protection Council, London; Ag Chem New Product Reciew, Ag Chem Information Services, Indianapolis, Indiana; Farm Chemicals Handbook, 1993 Edition, Meister Publishing Company, Willoughby, Ohio and the like).

The invention also includes herbicidal or plant growth regulating compositions comprising herbicidally effective amounts of combined dimethhenamide and at least one other herbicide.

A synergistic herbicide containing active ingredient, conventional adjuvants and an agriculturally acceptable carrier, according to the invention, is characterized in that it comprises a herbicidally effective combined amount of dimethhenamide, a herbicide selected from the group of sulfonylurea herbicides, including rimsulfuron, metsulfuron, methylsulfuron, triasulfuron, primisulfuron, bensulfuron, chlorimuron, ethylchlorimuron, chlorsulfuron, sulfometuron, thifensulfuron, tribenuron, etametsulfuron, kopyrasulfuron, pyrazasulfuron, prosulfuron and halosulfuron, and the ratio of the herbicide from the group of ureas, herbicide, linchloriduronuron, for the urea group, herbicide. urea to dimethanamide is

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2: 1 to 1: 4, the weight ratio of dimethhenamide to sulfonylurea herbicide is 0.6: 1 to 3000: 1 and the active ingredients are present in an amount of 0.01-90% by weight.

Preferably, the agent comprises dimethhenamide, chlorimuron and diuron as active ingredients, especially in weight ratios ranging from 33.75: 1:19 to 45: 1:19.

Such compositions contain the active ingredients in combination with agriculturally acceptable diluents. They can be used either in solid or liquid form, e.g. in the form of a suspension or an emulsifiable concentrate containing conventional diluents. Such compositions may be prepared in a conventional manner, e.g. by mixing the active ingredient with a diluent and optionally other formulation ingredients such as surfactants and oils.

The term diluents as used herein means any agri-acceptable liquid or solid material that can be added to the active ingredient to provide easier or better forms of application, or to achieve a useful or desired potency. Examples of diluents are talc, kaolin, diatomaceous earth, xylene, non-phytotoxic oils or water.

Particular formulations for spray application, such as water-dispersible concentrates or wettable powders, may contain surfactants such as wetting and dispersing agents, e.g., condensation product of formaldehyde with naphthalenesulfonate, alkylarylsulfonate, lignin sulfonate, fatty alkyl sulfate, ethoxylated alkylphenol fatty alcohol.

In general, the formulations contain from 0.01 to 90% by weight of the active ingredient (s) and from 0 to 20% by weight of agriculturally acceptable surfactant. Concentrated forms of the compositions generally contain between about 2 and 90%, preferably between about 5 and 80% by weight of active ingredient. Formulations in application form may, for example, contain from 0.01 to 20% by weight of active ingredient.

When used simultaneously, in succession or in tank mixes, the herbicidal partner (s) may be used, where appropriate, in a commercially available form and at dosages equivalent or preferably lower than those recommended by the manufacturer or in the publications mentioned above. Dimethhenamide can also be used in its commercial form (e.g. as a FRONTIER® herbicide) or prepared e.g. as described in the aforementioned US Patent No. 4,666,502.

Other compounds having a biological effect, for example compounds having an insecticidal or fungicidal activity, can also be included in the common use according to the invention.

A preferred method of application is to prepare a tank mixture, e.g. by adding dimethhenamide to a tank containing the other partner herbicide and the appropriate surfactant or vice versa depending on the type of partner herbicide selected. It is recommended to analyze the indicated uses on their packaging and to conduct a compatibility test before mixing partners.

Depending on the choice of co-used partners, pre-emergence and post-emergence effects can be achieved against a wide range of broadleaf and grass weeds. Examples of such weeds are:

- couch grass

- grass making grass

- roof slope, e.g. roof slope 'damming grass

- buttercup, pa ^ zuik, e.g. sour stick stick, thread stick

- one-sided weed

- come on

- łi ^^^ ća dam-building

Agropyron repens Brachiaria platyphylla Bromus spp Cenchrus spp Dactyloctenium aegyptium Digitaria spp

Echinochloa crus-galli Eleusine indica Eriochloa spp

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Leptochloa filiformis Oryza sativa Panicum spp Poa annua Setaria spp

Sorghum almum Sorghum bicolor Sorghum halepense Urochloa panicoides Acanthospermum hispidum Amaranthus spp

Ambrosia artemisiifolia Bidens pilosa CapseUa bursa-pastoris Chenopodium album Cleome monophylla Commelina spp Crotalaria sphaerocarpa Datura stramonium Desmodium tortuosum Euphorbia nutans Euphorbia maculata Galinsoga parviflora Ipomea spp Lamiariaum purpillillaum Materico spp.

Portulaca oleracea Richardia scabra Schkuhria pinnata Sida spinosa Solanum spp

Stellaria media Tagetes minuta Cyperus esculentis Cyperus iria

In addition, when mixed, the protective weeds:

- threadlike leptochloa

- red rice

- millet, e.g. large-flowered millet

- annual panicle

- trichinosis, e.g. trichinosis, blue trichinosis, trichinosis, green trichinosis

- Aleppo sorghum

- amaranth, e.g. lebioda, rough amaranth, small flower scarlet

- a lofty god

- hairy hitch

- common steak

- white quinoa

- Datura Poland

- small-flowered yolk

- wolf, e.g. morning glory wolf

- purple luminous

- common chamomile

-mak

- knotweed, e.g. sorrel knotweed, postwar knotweed, bird knotweed

- common purse

- thorn saddle

- nightshade, e.g. black nightshade, hairy nightshade, silver-leaved nightshade

- starfish

- yellow tiger h of partners, it is also possible to combat the malaise

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Abutilon theophrasti - clone (velvetleaf) Hibiscus trionum - southern ketmah Avena fatua - deaf oats Sinapis alba - light mustard Xanthium strumarium - common turnip Cassia obtusifolia - Apera spica-venti - grain broom Campsis radicans - Rnttbne] lia exaltata - rottboellia scabies Cynodon dactylon - canine proper tooth Lespedeza spp - Japanese clover Trifolium spp - Clover Hippuris vulgaris - common chewing gum Asclepias spp - Salvia spp - sage Salsola iberica - barbed brine Co ^ olwlus arvensis - morning glory Crisium arvense - field thistle Prnbnscidea lnuisianica - Senecio spp. - an old man, e.g. an ordinary old man ChOTispora tennela - blue mustard Alopecurus my ^ uroides - field foxtail Sisymbrium altissimum - you close up a pannonian Caperionia palustris - Crop selectivity will usually depend on partner selection. Dimethenamide

shows excellent selectivity in grain (maize), soybeans and several other crops.

Specific examples of co-use partners with dimethhenamide are products selected from one or more of the types listed below from a) to w):

a.benzoic acids, e.g. dicamba,

b.Picolinic acids and related compounds, e.g. picloram, triclopyr, fluroxypur, clopyralid,

c. phenoxy derivatives, e.g. 2,4-D, 2,4-DB, triclopyr, MCPA, MCPP, 2,4-DP, MCPB,

d. other chloroacetamides, e.g. alachlor, acetochlor, metolachlor, diethatyl, propachlor, butachlor, pretilachlor, metazachlor, dimethachlor, especially metolachlor, alachlor, acetochlor,

e. amides, e.g. propanil, naptalam,

f. carbamates, e.g. asulam,

g. thiocarbamates, e.g. EPTC, butylate, cycloth, molinate, pebulate, thiobencarb, triallate, wemolat,

h. nitriles, e.g. bromoxynil, ioxynil,

i. ureas, e.g. diuron, thidiazuron, fluometuron, linuron, tebuthiuron, forchlorfenuron,

j. triazines, e.g. atrazine, methribuzin, cyanazine, simazine, prometone, amethrin, promethrin, hexazinone,

k. diphenyl ethers, e.g. acifluorfen, fomesafen, lactophen, oxyfluorfen,

l. dinitroaniline, nn rrifluraifnar pnodianuna.bnnefina, etalflualin, isopropalin, oxyzahna, pendimethalin,

m. sulfonylnmncpniki, e.g. rimsulfuron, metsulfuron, oiknsulfuron, triasulfuron, primisulfuron, bensulfuron, chlarsulfuron, sulfometuron, thifensulfuron, tribenuron, etame175 586 tsulfuron, triflusurulfuron, etame175 586 tsulfuron, triflusasulfuron, chloropyrasulfuron, chloropyrasulfuron, 15-sulfurulfuron, chloropyrasulfuron ,

n. imidazolinones, e.g. imazaquin, imazametabenz, imazapyr, imazethapyr,

o. cyclohexunadienes, e.g. sethoxydim,

p. aryloxyphenoxy derivatives, e.g. fluazifop,

q. bipyridyl derivatives, e.g. paraquat, diquat,

pyridazone, e.g. norflurazone,

s. uracils, e.g. bromacil, terbacil,

t. isoxazolones, e.g. clomazone,

u. miscellaneous, nn.gfphosate, glufosinate, matazol, peddoputrazole, bentazone, desmeditam, phenmedipham, pyrazone, pyridate, ρο ^ γόΙ, fluridone, DCPA, dithiopyr, pronamide, bensulide, naprgpamid, siduropyl-clethodimulophe , ethyl-fenoxaprap, methyl-hatoxyfgr, quizalofopdiclaboml, isaxabenz, axadiazan, pukloZutradal, etaiumesut, quincloract difenzoquutte οπΙο ^ ΙΙ, DSMA fosaminate, MSMA ,:

v. group 11a otherwise described above,

v. group 11b others described above.

Particularly preferred partners from groups a) to w) are the herbicides of groups m) and v), i.e. sulfonylureas, triketones and diones.

The co-adjustment of the combination of dimethenaamide and the sulfonyl amide (s) in the center is particularly suitable for leafy crops such as cereals, corn, sugarcane and rice. For example, use in sugarcane infested with iodine and dicotyledonous weeds is particularly advantageous because it does not have an increased harmful effect on crops, but the weeds are controlled very effectively. It is possible to apply this preferred combination before and after the emergence of unwanted weeds. However, the preferred timing in sugar cane is for the emergence of sugar cane seedlings or for the transplantation of shoots grown after cutting the cane stem.

The adjusted dosages with the co-appropriate dimotonoamiddio and sultenyl sugar will of course depend on climatic conditions, crayfish vapor, soil ecology, weed control and the like, however, positive results may be obtained, e.g. with co-used sultonylurea compounds that are significantly lower than recommended. when used alone, e.g. 1 to 150 g / ha, preferably 10 to 100 g / ha.

Of this group, combinations for controlling sugarcane weeds are preferred in which sultonyl (gmecdnikiom is chleriraurgn. The mixture ratio will be determined according to the specificity of the soil, the crop used and the climatic conditions. An example of a co-applied dose would be a range of 0.9 to 3.0 kg. / ha dimethhenamide and 10 to 100 g / ha chlorimuron For the control of cibara species in sugarcane, they will be, for example, 2.0 to 3.0 kg / ha dimethhenamide and up to 50 g / ha chlarimuron. The weight ratio of active ingredient in the composition of chlorimuron and dimotonaamide is between 1: 3000 and 1:20, preferably 1:30 to 1:60, e.g. 1:34 or 1:38 or 1:45.

In the case of co-use in a triple mixture of dimethhenamide and a sulfanylamide of group m), the third component is selected from group i), i.e. the group of herbicidal mealworms. In a typical triple mixture, the mealworm component will be present in a ratio of 2: 1 to 1: 4 based on the dimotonamide content with an excess of dimotonamide being preferred, i.e. the preferred ratio is 1: 1 de 1: 3, e.g. 1: 2. A preferred herbicidal mealworm in the triple mix is diurane.

An example of a particular mixing partner would be linuron.

Further examples of individual mixing partners may be selected from the following: nicosulfuron (e.g. ACCENT®), rimsulfuron (e.g. TITUS®) and primisulfuran (e.g. BEACON®) (Group III compound).

Further examples of individual de-blending partners include chlarimuran in a triple blend together with juko FRONT® diuron. . .

Will agree with the desired weed spectrum, timing of application, and particular examples of suitable blending partners other, individual herbicides listed in groups a) de w).

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Example I. The active ingredients were weighed and dissolved in a stock solution consisting of acetone and deionized water, 1: 1 and 0.5% of an adjuvant mixture consisting of the surfactants SPAN® 20: tWEen® 20: TWEEN® 85, 1: 1: 1. Dilution with this stock solution was performed by allowing spray solutions to be prepared as single doses of the individual or combined active ingredients. Each dose was applied simultaneously with a linear track sprayer unit delivering 600 liters / ha of spray volume both to the foliage of the seedlings of the selected weed species for post-emergence application and to the surface of the soil previously seeded for pre-emergence application. The seedlings were grown until the plant developed! to the second or early third leaf stage. The development stage of each seedling was recorded at the time of application. After application, the treated plants are transferred to a greenhouse and kept until the end of the experiment within four weeks. Injury symptoms were recorded two and ten days after post-emergence application and fourteen days after pre-emergence application. A visual assessment of% crop damage and weed control was performed ten and twenty-eight days after pre-emergence application and fourteen and twenty-eight days after pre-emergence application.

Co-application of dimethhenamide with the other individual active ingredients indicated above results in improved herbicidal activity compared to the use of each active ingredient alone.

Example II. Field trials were carried out on plots (2 x 20 m) with planted sugar cane and weeded cibora (cyperus rotundus) in the first or second stage of development, and dusted from the back spray with various concentrations of the mixture in the tank. The spray rate was 400 l / ha. The application rates were 2.7 kg / ha of dimethhenamide with 1.6 kg / ha of a mixture with a fixed ratio of chlorimuron and diuron (1:19), which is commercially available under the name FRONT®. Visual assessment was done 30 or 60 days after application (DAT) in% failure. The expected value of the added action was calculated by the Colby method. The results obtained are given in the table.

Table

Compound (active ingredient / ha) Conditions Cyperus% Damage (DAT) Expected action added Action synergistic light to medium soil Dimethenamide 2.7 kg Chlorimuron / Diuron 1.6 kg Dimetheneamide / Chlorimuron / Diuron 2.7 + 1.6 kg 19 (60 DAT) 45 (60 DAT) 76 (60 DAT) 55 +21 heavy soil Dimethenamide 2.7 kg Chlorimuron / Diuron 1.6 kg Dimetheneamide / Chlorimuron / Diuron 2.7 + 1.6 kg 10 (60 DAT) 37 (60 DAT) 74 (60 DAT) 43 +31 light to medium soil Dimethenamide 2.25 kg Chlorimuron / Diuron 1.2 kg Dimetheneamide / Chlorimuron / Diuron 2.25 + 1.2 kg 23 (30 DAT) 48 (30 DAT) 80 (30 DAT) 60 +20 light to medium soil Dimetheneamide 2.7 kg Chlorimuron / Diuron 1.2 kg Dimetheneamide / Chlorimuron / Diuron 2.7 + 1.2 kg 27 (30 DAT) 48 (30 DAT) 88 (30 DAT) 62 +26

The obtained results indicate that the synergistic effect was obtained for the triple mixture (dimethenamide / chlorimuron / diuron).

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Claims (9)

Patent claims 1. A synergistic herbicide comprising an active ingredient, conventional adjuvants and an agriculturally acceptable carrier, characterized in that it comprises a herbicidally effective combined amount of dimethhenamide, a herbicide selected from the group of sulfonylurea herbicides, including rimsulfuron, metsulfuron, methylmetsulfuron, triasulfuron, nicosulfuron, nicosulfuron primisulfuron, bensulfuron, chlorimuron, ethylchlorimuron, chlorsulfuron, sulfometuron, thifensulfuron, tribenuron, etametsulfuron, clopyrasulfuron, pyrazasulfuron, prosulfuron and halosulfuron and urea herbicide ratio, including diuriduronium, foruronium urea herbicide, herbicide to theburonuronium, theburicide of dimethanamide is 2: 1 to 1: 4, the weight ratio of dimethhenamide to sulfonylurea herbicide is 0.6: 1 to 3000: 1 and the active ingredients are present in an amount of 0.01-90% by weight. 2. The agent according to claim A composition according to claim 1, characterized in that the active ingredients are dimethhenamide, chlorimuron and diuron. 3. The agent according to claim The process of claim 2, characterized in that it comprises dimethyleneamide, chlorimuron and diuron in weight ratios ranging from 33.75: 1:19 to 45: 1:19. 4. A method of controlling undesirable vegetation, characterized in that a synergistic herbicide is applied to the sites of undesirable vegetation, characterized in that it comprises a herbicidally effective combined amount of dimethhenamide, a herbicide selected from the group of sulfonylurea herbicides, including rimsulfuron, metsulfuron, methyl-metsulfuron, nicosulfuron, triasulfuron, primisulfuron, bensulfuron, chlorimuron, ethylchlorimuron, chlorsulfuron, sulfometuron, thifensulfuron, tribenuron, etametsulfuron, clopyrasulfuron, pyrazasulfuron, prosulfuron, and halosulfuron, and the group of foricide, liniuturon, foricide, and foricide from the group of foricide. the ratio of urea herbicide to dimethanamide is 2: 1 to 1: 4, the weight ratio of dimethhenamide to sulfonylurea herbicide is 0.6: 1 to 3000: 1, and the active substances are present in an amount of 0.01-90% by weight, but dimethhenamide inside is used in quantity 0.1-3 kg / ha, the center sulfonylurea is applied at 1-150 g / ha and the center urea is applied at 0.5-600 g / ha. 5. The method according to p. 4. The process of claim 4, wherein the agent is applied, characterized in that the active ingredients are dimethhenamide, chlorimuron and diuron. 6. The method according to p. 4. The method of claim 4, characterized in that the agent is applied, the active ingredients being dimethhenamide, chlorimuron and urea, but the dimethhenamide inside is used in an amount of 0.9-3 kg / ha, the chlorimuron inside is used is applied in an amount of 10-100 g / ha and the urea inside is applied in an amount of 0.5-600 g / ha. 7. The method according to p. The process of claim 4, characterized in that the agent is applied, characterized in that the active ingredients are dimethhenamide, nicosulfuron and urea. 8. The method according to p. 4. The method of claim 4, characterized in that the agent is applied, characterized in that the dimethhenamide present in the agent is applied in an amount of 0.1-2.0 kg / ha, in particular 0.25 to 1.5 kg / ha. 9. The method according to p. 4. The process of claim 4, characterized in that the agent is applied characterized in that the sulfonylurea contained in the agent is applied in an amount of 10 to 100 g / ha. 175 586